Taken from
http://www.wendys.com/w-1-0.shtml
"This weekend Wendy's is giving away free, cool and creamy Jr. Frostys. Icy-cold, chocolaty refreshment, absolutely Free. No coupon needed. No purchase necessary. Just come in and say "Free Frosty". A "please" would be nice, but not required either."
"Available in the US, its territories and select international markets. At participating Wendy's while supplies last. Limit one per customer. Friday, May 13th through Sunday, May 15th."